answer 6 no question
Attachments:
Answers
Answered by
1
Sound lasts in our ear for 0.1 sec.
Speed of sound is 300m/s.
300*0.1=30m
So, sound must travel at least 30m so that we can hear the echo clearly.
As sound has to bounce back from the surface, the minimum distance required for an echo is 30/2= 15m
Hope it helps. ...
Speed of sound is 300m/s.
300*0.1=30m
So, sound must travel at least 30m so that we can hear the echo clearly.
As sound has to bounce back from the surface, the minimum distance required for an echo is 30/2= 15m
Hope it helps. ...
keshavkumar5:
why 30/2
Because, for clear echo, sound have to travel twice the distance
oo thnku
Imagine, if you are standing 15m in front of a wall (say). And you shout. You hear your echo. The distance between you and wall is just 15m, but still sound have to travel 30m. 15m from you to wall, and again 15m from wall to you
Welcome
yesss tahnku nice answer
If you won't mind me asking, are you from class 9th??
8 th class
okk
Similar questions
Social Sciences,
7 months ago
Math,
7 months ago
Geography,
7 months ago
English,
1 year ago
Math,
1 year ago